Finding the Fourth Proportional to 142,189.91, 196,310.82 and 90,536.16

Step by Step Solution

1. Step 1: Write the proportion equation
   142,189.91 : 196,310.82 = 90,536.16 : x
2. Step 2: Convert to fraction form
   142,189.91/196,310.82 = 90,536.16/x
3. Step 3: Cross multiply
   142,189.91x = 196,310.82 × 90,536.16
4. Step 4: Simplify right side
   142,189.91x = 17,773,227,809.25
5. Step 5: Solve for x
   x = 17,773,227,809.25/142,189.91
6. Step 6: Final answer
   x = 124,996.41